Gearing.



GEARING. APPL1cAT|oN- FILED JUNE 28. 1913.

APatented NV. 7', 1916.

2 SHEETS-SHEETr I.

MMI?

J. G. P. THMAS.

GEARING. APPLICATIH lFILED lune 28.. |913.

Patent-eti Nov. 7, 1916. 2 SHEETS-SHEET in rae.

JOHN GODFEEY PAREY THOMAS, ,OF CHISWICK, LONDON, ENGLAND, SSGN 'E0' THOMAS FOREIGN PATENTS GREAT BnLTAIN.

To all whom it may concern:

Be it known that I, JOHN GODFREY BARRY THOMAS, a subject of the King of Great Britain, residing at 21 Ennismore avenue, Chiswick, in the county of-.London, England, have invented new and useful lmprovements in Gearing, of which the following is a specification.

This invention relates r uction gearing to two axles of a vehiclei .in order that the adhesion of two set wheels' may be utilized for propulsion without, excessive wear occurring when from any cause one set of wheels has to rotate at a slightly different speed from the other.

According to the invention the differential gearing and the desired reduction gearing are mounted in a casing arranged about one of the driven axles.. The side members of the differential gearing, which is'arranged above or below the axle, drive through spur pinions and spur wheels to shafts on with the axle but at right angles to it. One of these is connected with the axle through bevel gearing, while the othei extends outside the casing and thrOugh'SuitabIe universal couplings and a second similar bevel gearing transmits the drive to the second axle. If desired the bevel gearing may also be reduction gearing, so that the Avehicle may exert a large tractive effort.

The accompanying drawings illustrate the construction in which the invention is em# bodied in a bogie, both axles of which are to be driven.

Figure 1 isa longitudinal section of the' structure, and Fig. 2 is a transversesection, on the line II-II of Fig. 1 s

In these drawing ,1 is a shaft driven through suitable universal couplings 1, 1b from the prime motor, and this shaft )can ries a central member 2 of-a differential gearingl siipported centrally above one axle,

4say the outer' axle 3 of the bogie in a casing 4 which surrounds that axle. The side members 5 and y6 Of the differential gearing are connectedfrespectively with spur pinions and 8 which mesh'with spur wheels 9 and 10 arranged on shortshafts 14, 109-`parallel to' the shaft 1 but at the level ofthe axle 3.

Each of these shafts `is supported at its LIMITED, or LONDON, ENGLAND, A

tov an improvedv arrangement of gearing for transmitting a level GEARING.

specificati@ of Letters raient; Pmfqmdmom 7, 93.3. Appiicaummea :une 28,1913. semi No. 776,345'.

inner and outer end in ball bcarings, 23, 24, 25 as indicated. The shaft 1 is "siniilarly mounted and in addition has thrust bearings 426 at either end to prevent longitudinal posed betweenthis bevel wheel 11 and the gear casing 4 to take up' end pressure. The shaft 14: ,of pinion 9 extends throu h the gear casing 4 and is driven throng universal coupling 15, an ordinary Cardan shaft 15- having the universal joint 16y at .its other end. This joint is also secured to a shaft 17 somewhat Similar to shaft 14:;v Shaftll' drives the second-or inner axle v18 of the bogie through bevel gears 19, 20. The track wheels 21 are carried by axle 18.

It will be noted that both the spur gears andthe bevel gears may form reduction gearing if `desired.A l

Alternatively the driving shaft may be brought beneath the inner axle of the bogie to operate a differential gearing arrainged below the Outer axle instead of above as in the construction illustrated. These and like modifications do not interfere with the operation or advantages of the invention.

Nhat claim is.:

1. ll'a'n vehicle having two driven axles, the combination withone of said axles of a casing, .a driving shaft therein at right angles to said axle, a balance gearing having :its central member connected to said shaft,

spur wheels on said shafts meshing with said spur pinions respectively, and means for connecting said shafts with the vehicle axles.

2. In a vehicle having two driven axles,4

the combination Ywith one axle- 'of a. casing thereupon, a driving shaft having bearings in said casing, a balance gearing having vits center member secured to said shaft two further shafts in said casing eaclrin'driving connection with one of saidaxl'es, and gearin vvithin said casing interconnecting the si e members of said balance gearing with the shafts in driving 4connection with the respective vehicle axles.`

lil@

fits entervmembez attached to said shaft-,-

vto said slmlnspm pinions attached toy the side members of said balance gearing, shafts on a level lwith but at right angles to the vehicleaxle mountedin said casing, lSpui' i wheels on said shaft-s meshing With said spur .pinionsJ a bevel Wheel on one of said "Shafts, 11d a bevel Wheel on the vehicle axle .meshing therewith.`

" 4. In a vehicle having two driven axles, the combination with one axle of a'casing mountedjthereupon, al driving shaft mounted, injsaid casing,xa balance gearing having,f

and reduction f'gealfing. included in said :asi'ng connectingjthe side members of said balance gearing with the vehicle axles.

5, ln a' vehicle having two driven axles.

vthey;combinationwith one of said-axles of a' casing, afdrivings'hat therein at right angles te said axle, a balance gearing having its cen- ,tral -meifnloerY connected to,v said shaaspur I 'ipinioney 'attachedto the side membeiso said i Lecaeea 'spur pinions respectively, and means con necting said shafts With the vehicle axles.

6. In a vehicle having two diiven'axle,C

' the combination with one of said axles e.

a cas1ng, a drlving shaft therein at ilght ,y angles to said axle, a balance gearing' havy' ing its central member connected to said shaft, spur pinions attached to the side members of said balance gearing, shafts on a level with but at right angles to the vehicle axle, spur Wheels on said shafts meshingv with said spur pinions respectively and reduction"gearing. in said casing connecting; said shafts withfthe vehicle axles.

.ln testimony whereof l have signed my naine to this specification inthe presence ef tvvo s nbscribing Witnesses.

'JOHN GODFREY PARRY THOMAS. Witnesses: f

LEONARD E. HAYNES.' 

